NOK 90311-99001 Land Rear Crankshaft Seal

( Brand: Nok ), ( Manufacturer Part Number: 90311-99001 ), ( Part Type: Seal Crankshaft ), ( Product Type: Engine ), ( Fitment Type: Direct Replacement ), ( Compatible Model S : Land Cruiser ), ( Fitnote: Manufactured Before July ), ( Product Subtype: Crankshafts ), ( Placement On Vehicle: Rear ), ( Product Details: Engine Crankshaft Seal ), ( Department: Replacement )

Review NOK Toyota Land Rear Crankshaft Seal fits CRUISER 1984–1987

The **NOK 90311-99001** is a high-performance, precision-engineered rear crankshaft seal designed specifically for Toyota Land Cruiser models produced between 1984 and 1987, including variants like the FJ40, FJ60, and their derivatives. Crafted from NOK s proprietary **high-quality nitrile rubber compound**, this seal is engineered to deliver exceptional durability, resistance to oil and fuel degradation, and superior sealing performance under demanding conditions. The seal features a **reinforced lip design** with a **metal reinforcement ring**, ensuring optimal flexibility and longevity while maintaining a tight, leak-proof fit against the crankshaft s polished surface. Its **smooth, tapered profile** minimizes friction and wear, reducing the risk of premature failure even in high-temperature environments or under heavy loads, such as those encountered in off-road or rugged terrain driving. The **precise O-ring groove** and **compression fit** guarantee a secure installation, preventing oil leaks that could compromise engine integrity or contaminate the transmission fluid. Whether used in original equipment applications or as a trusted replacement part, the NOK 90311-99001 is built to withstand the harshest conditions, providing reliable protection for the rear main seal area and extending the lifespan of your Toyota Land Cruiser s drivetrain. Its compatibility with the Land Cruiser s unique crankshaft dimensions and mounting configurations ensures a seamless fit, making it an ideal choice for both professional mechanics and DIY enthusiasts seeking long-term reliability.

### Pros and Cons of buying a Part **NOK 90311-99001 (Rear Crankshaft Seal) for a Toyota Land Cruiser (1984 1987)**

1. **OEM Quality** NOK is a well-respected manufacturer known for producing high-quality seals that meet or exceed original equipment standards. This ensures better durability and reliability compared to generic or aftermarket alternatives.

2. **Compatibility** The part is specifically designed for the 1984 1987 Toyota Land Cruiser, reducing the risk of sizing issues or improper fitment.

3. **Long-Lasting Performance** A properly installed NOK seal should last the life of the vehicle if maintained correctly, reducing the need for frequent replacements.

4. **Reduced Oil Leaks** A failing rear crankshaft seal can cause significant oil leaks, damaging the transmission and other components. Replacing it with a quality seal helps prevent costly secondary damage.

5. **Ease of Installation** While the job requires some mechanical skill, the seal itself is straightforward to install, especially with the right tools (e.g., a seal driver and torque wrench).

6. **Warranty Coverage** Many reputable sellers offer warranties on NOK parts, providing peace of mind in case of premature failure due to defects.

7. **Prevents Transmission Damage** Oil leaking past a worn seal can contaminate the transmission fluid, leading to costly repairs. Replacing it proactively avoids this issue.

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1. **Higher Cost** NOK parts are premium, and this seal will likely be more expensive than generic or budget alternatives (though the long-term savings may justify the price).

2. **Labor-Intensive Installation** Replacing the rear crankshaft seal requires removing the transmission, which is a significant job. If you re not experienced with transmission work, professional labor costs will add up.

3. **Risk of Damage During Removal** Improper handling during disassembly (e.g., stripping bolts or damaging the flywheel) could lead to additional repairs.

4. **Potential for Counterfeit Parts** If purchasing from an untrusted seller, there s a risk of receiving a fake or low-quality NOK seal. Always buy from reputable suppliers (e.g., RockAuto, Amazon, or Toyota dealerships).

5. **Additional Consumables Needed** The job may require new gaskets (e.g., flywheel or transmission mount gaskets), bolts, or sealant, adding to the total cost.

6. **Time-Consuming** The process can take several hours, especially for a DIYer, which may not be feasible for those with limited time or tools.

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The **NOK 90311-99001 rear crankshaft seal** is a strong choice for your 1984 1987 Toyota Land Cruiser due to its reliability, compatibility, and long-term performance benefits. While the upfront cost and labor requirements are higher than some alternatives, the risk of oil leaks and transmission damage makes it a worthwhile investment. If you re comfortable with transmission work or have access to a mechanic, this seal is a safe and high-quality option.

For those on a tighter budget, a **reputable aftermarket brand** (e.g., Fel-Pro or Gates) could be a cost-effective alternative, though they may not last as long. Always verify the part number and seller s reputation before purchasing.

- **Buy from a trusted source** (e.g., RockAuto, Amazon, or a Toyota parts dealer) to ensure authenticity.

- **Prepare for the job** by gathering the right tools (socket set, torque wrench, seal driver, and possibly a transmission jack).

- **Consider professional installation** if you lack experience with transmission work to avoid costly mistakes.

- **Inspect the seal and surrounding components** during installation to address any other wear (e.g., flywheel damage or transmission mount issues).

If the seal is failing and causing leaks, replacing it promptly with the NOK part is the best long-term solution for your Land Cruiser.

Details:

Manufactured to meet or exceed strict quality requirements. Made from high-quality materials for ultimate durability. Rear Crankshaft Seal 90311-99001 by NOK. This product is distinguished by total quality assurance, unsurpassed anybody else.

Right for your vehicle and lifestyle. Features: designed to deliver trouble-free, consistent performance.

part #: 9031199001 price

• $17.66

specifications cranshafengin:

• for models: Cruiser
• for makes: Toyota
• for years: 1984-1987
• brand: Nok
• mpn: 90311-99001
• part type: Seal Crankshaft
• product type: Engine
• fitment type: Direct Replacement
• compatible model s : Land Cruiser
• fitnote: Manufactured Before July
• product subtype: Crankshafts
• placement on vehicle: Rear
• product details: Engine Crankshaft Seal
• department: Replacement

returns cranshafengin:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

payments cranshafengin:

• credit card: Discover
• wallet: Apple-pay
• other

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: New

seller cranshafengin:

• rating: 99.0%
• city: Shawnee, Kansas
• # reviews: 150321

offer cranshafengin:

• quantity: 5
• options: Ship-to-home
• sold: 0
• started: March 5, 2026
• availability: In Stock

shipping cranshafengin:

• carrier: UPS
• service: UPS Ground
• cost: $13.00
• type: Fixed
• transit: 2-5 Days
• class: Standard

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